Fluid-pressure regulator



J. OLSON. FLUID. PRESSURE REGULATOR.

(No Model.)

Patented Deo. 4, 1894.

- Valves; and I do declare the following to be a .diaphragms being madefast to piston D, by

UNITED STATES@ yPATENT Fries. r

JOHN oLsoivgoF Two HARBoRsivnNNEsoTA.

FLUID-PRESSUR REGULATOR.

, SPECEFCATION forming part of Letters Patent No. 530,200, datedDecember 4, 1894.

Application tiled March 1'7, 1894.

To all whom it may concern:

Be it known that I, JOHN OLSON, a citizen` of the UnitedStates, residingat Two Harbors," in the county of Lake and State of Minnesota, haveinvented certain new and useful -Irn provements in Fluid Pressure-Regulatingfull, clear, and exact description of the invention, such as`will enable others skilled in the art to which it appertains to makeand use the same, reference being had to the accompanying drawings, andto the letters of reference m-arked thereon, which form a part of thisspecification.

My invention relates to those automatic valves which are used forregulating or reduc-lr ing the pressure of fluids delivered throughthem, as will be fully described and set forth in the accompanyingdrawings, specification and claims. Y

The object of the invention is to provide a valve which shall be at oncesimple, sensitive, and reliable.

To this end it consists in the combination of a piston with packingring, and diaphragms in the peculiar form and manner hereinafterdescribed and' claimed.

In the accompanying drawings--Figure 1 is a vertical axial sectionthrough a regulator constructed on my plan. Fig. 2, is a similar viewtaken at right V'angles to Fig. A1. Fig. 3 is a cross section takenonlines :v -x of Fig. l. Fig. 4; is a sectional view of piston withdiaphragms attached. Fig. -is a detail view of pop valve in cap C.

Referring to the drawings-A represents the valve-body, having the inletpassage a, and outlet passage b, with caps B and C, screwed intosaidvalve-body A.

D is a vertically moving valve made in shape of a piston with packingring c, made in that peculiar form as shown, and mounted on andbetween'two diaphragms c and d, said nuts e and f, and mounted betweenthe valvebody A, and caps B and C; thus also forming a joint between theinitial of'valve-body A, and chambers w and n in caps B and C. It willbe noticed, packing-ring c, is made with an annular rib at its innerside, and piston head D having an angular groove wherein said rib isplaced. Thus the packing ring may cover Serial No. 504,/005. (No model.)

the Whole periphery of lthe piston-head and project out to the edges ot'the same, and still keep its place. The cap C has at its end a pop valveg; in other words, a valve that will raise at a certain pressure, as maybe desired,andheld toitsseatbyspring h,mounted in said vvalve and adjusted by screw 2', screwthreaded in cap C, and having a cap orchecknutj. The fluid pressure will enter through port k, and when itexceeds the tension of spring h, will then lift valve g, from its seatand pass down through passage l, in chamber n, and depress valve D, thusclosing communication to passage b. It I desire to invert the regulatingvalve and at the same time wish to have the valve closed when not inuse, l have alight spring m, placed in chamber n, between cap C anddiaphragm c', having a tension equal to the weight of piston-valve D,and force required for compression of said diaphragm. A small passage 0,is made in cap C, that the pressure in chamber n may escape after valveg is closed, thus allowing the diaphragms and piston-valve D, to raiseand open the communication through ports a,

and bf Cap Brhas also a spring p resting against nutfand nut q, on stemr, said stem having acollar s, restingagainst the inner side of cap B,and on its outer end a handle VWheel t, to adjust thetension of springp.The

nut q, is provided with a lug or projecting point. This travels ingroove u in theinner side of cap B, thus preventing said nut fromturning around when the tension of spring p is adjusted. y

vA small port o is made at any convenient place in cap B, thus allowinga free ingress and egress of the atmosphere in chambers w, as pistonvalve D and diaphragms c and d Vare moved back and forth by the fluidpressure and the adjusting springs.

A passage b as shown in Fig. 3, is composed ot' a series of small portsd,..its object being to leave a small portion of metal to guidepacking-ring c, as itlit were only an open passage or slot, saidpacking-ring might, at some time, get caught in said slot and thus thefree working of the regulator be obstructed. When I desire to use saidregulating valve, forwhat is known as a reducing valve, l have provideda port or passage a. leading from passage h, through the wall ofvalve-body A IOC and communicating with port b in cap C; thus allowingthe pressure in passage b, to accumulate in chamber n. When saidpressure exceeds the tension of spring p, it forces the piston valve Ddown, thus cutting olf or obstructing the free passage of pressurethrough portsct and b. As the pressure in passage b decreases thepressure in chamber n likewise decreases. Thus the tension of spring p,forces the piston valve and diaphragme up and again opens the passage b.When I wish to use the regulator for other purposes and not as areducing valve, I screw cap O in a little harder, sufficient to closethe communication between passage h', and passage a', as shown by dottedlines in Fig. 2, port Z1' being moved suiiicient to close passage a'.

The working of my improved regulator is as follows:-When used inconnection with air pumps, I connect passage awith the pipe leading fromthe boiler pressure on an engine or other receptacle containingpressure, and passage 7.: with a pipe from engineels brake valve, and inconnection with the pressure in what is known as train line pressure,and adjust spring p, sufiicient to keep valve D open when pressure inchamber n is removed. As the pressure in pipe leading from train topassage 7s rises above the required pressure, it forces valve g from itsseat, Hows down through passage Z into chamber n and forces the piston Ddown, thus cutting off communication between passages a and b. As thepressure under valve g decreases spring h seats said valve and thepressure in chamber a escapes through vent port o, and the tension ofspring p, raises piston valve D thus opening thel communication asbefore.

When I desire to use my regulator as a reducing valve, I adjust cap U sopassage a corresponds with passage b. Thus free communication will beobtained between passage b, and chambern. As the pressure in chamber b,increases above the tension of spring p, it forces piston D down andcuts ott communication through port b. As the pressure in chamber n,decreases springp forces piston D up and thus opens the communication asbefore.

I wish it understood that I may dispense with valve g and makeconnection with passage aand omit passage o, if I desire withoutdeviating from the principle of my invention.

Having thus described my invention, what' l. In a tluid pressureregulating valve, the combination of a chambered casing provided withinlet and outlet ports, the outlet port being composed ot' a series ofsmall passages, chambered caps screwed into said casing and diaphragmeinterposed between said casing and caps, a piston operating as a valveto open and close said ports mounted onto and between said diaphragmscarrying a packingring having an annular rib on its inside;substantially as described and shown.

2. In a fluid pressure regulating valve the combination of a chamberedcasing provided with inlet and outlet ports, the outlet port beingcomposed ot' a series of small passages, chambered caps screwed intosaid casing and diaph ragms interposed between said casing and caps, apiston operating as a valve to open and close said ports, mounted ontoand between said diaphragms carrying a packingring having an annular-ribon its inside, one ot' the chambered caps being provided with a popvalve and passages leading to and from the same into the chamber betweenthe diaphragm and cap, a spring interposed in said chamber between saidcap and diaphragm; the other cap being provided with an adjusting springinterposed between the diaphragm and a nut mounted on an adj usring stempassing through said cap and provided with a handle, said nut having aprojecting lug trav eling in a groove on the inside ot said capsubstantially as described and shown.

3. In a iiuid pressure regulating valve; the combination of a chamber-edcasing provided with outlet and inlet ports the outlet port beingcomposed ot' a series of small passages, chambered caps screwed intosaid casing and diaphragms interposed between said caps and casing, apiston operating as a valve to open and close said ports, mounted ontoand between said diaphragms, carrying a packingring one of the chamberedcaps provided with a pop valve and passages leading to and from the sameinto the chamber between the diaphragm and cap, a spring interposed insaid chamber between said cap and diaghragm, the other cap provided Withan adjusting-spring interposed between the diaphragm and a nut mountedon ari adjusting stem passing through said cap and provided with ahandle said nut having a projecting lug traveling in a groove on theinside of said cap, a passage leading from the outlet port in the casingand to a port in the cap provided with the pop valve said passages maybe set or adj usted so they will register or not to register as desired,substantially as described and shown.

In testimony whereof I aix'my signature in presence of two Witnesses.

JOHN OLSON.

Witnesses:

LUTHER L. APPLE, JOHN WELCH.

IOO

